LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Car falls on face on slight throttle

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Old Jun 15, 2005 | 01:28 AM
  #1  
9T4Z28's Avatar
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From: NYC
Car falls on face on slight throttle

Hey everyone I just got my wires replaced again, Last time had two the burned on the exhaust manifolds , i also replaced the plugs. But ever since the first wires replacement my car from a stop or slow roll will fall flat on its face with slight throttle. I dont even want to know what it would do with a full mash of the throttle. This was not always present the car before was able to take full throttle from dead stop, slow roll and spin the tires with ease. But now it seems like the car wants to stall, and i have to let off the gas for it to regain its composure. It feels like the car is stuttering. I cant figure it out for the life of me. I really need help thanks guys in advance!
Dan

94 z28, a4, 4.11 rear, new standard wires, and new ac delco platniums, about 1k on the fuel filter
Old Jun 15, 2005 | 01:32 AM
  #2  
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From: NW Indiana
Re: Car falls on face on slight throttle

sounds like the optispark. sorry to break the bad news.
Old Jun 15, 2005 | 02:04 AM
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9T4Z28's Avatar
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Re: Car falls on face on slight throttle

I just replaced it last september...
Old Jun 15, 2005 | 10:24 PM
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9T4Z28's Avatar
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Re: Car falls on face on slight throttle

any1? i am so frustrated with this i cant figure it out for the life of me
Old Jun 16, 2005 | 09:16 AM
  #5  
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From: Clarkston MI
Re: Car falls on face on slight throttle

I've got a similar problem on a '95. How does your car run above 2000 rpm. Mine 2000-2200 rpm runs pretty well and above 3000 rins fine. The only real way to get the car moving is to play with the throttle and slip the the clutch a whole bunch. Between Idle and 2000 rpm, car doesn't have the ability to move out of its own way. Fuel economy is aughful and 3th - 6th gear and light throttle is OK but give it anymore than 1/3 to 1/2 throttle and it looks and feels like the trans is going to drop on the ground until the engine gets to 2000 RPM then it starts making power.

Any ideas?
Old Jun 16, 2005 | 09:39 AM
  #6  
jim88iroc305's Avatar
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From: Rockville Centre, NY, USA
Cool Could be something simple

like your EGR valve is shot.
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